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running engine and bass loss

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=114804
Printed Date: May 11, 2024 at 12:33 AM


Topic: running engine and bass loss

Posted By: shahsalam1
Subject: running engine and bass loss
Date Posted: July 02, 2009 at 5:37 AM

I have Sony CDX-A250 with rear 6x9 speakers driven by 300Wamp. Every thing works fine unitl engine is turned off and system is running from battrey. Although battery is little weak but works well to drive audio system.

The problem arises whenever i start my car and drive, i can feel significant bass loss. I can't say it's completely gone but it doesn't feel solid bass as it feels when engine  was turned off.

there is no alternator whine or any other distortion. Tell me if it is really a problem ?




Replies:

Posted By: i am an idiot
Date Posted: July 02, 2009 at 5:59 AM

Is there an outboard amplifier on the system? 

If it was not a problem, would you have posted the question.  My bet is "it is a problem"  At least a problem to you.   If I help you fix your problem, will you tell us where he is?





Posted By: shahsalam1
Date Posted: July 02, 2009 at 7:29 AM

it is a great problem for me,

Yes there is. It is a 3 way channel amplifier. it was working with no problems at all with previous headunit.





Posted By: i am an idiot
Date Posted: July 02, 2009 at 10:42 AM

Are there any speakers connected to the radio's speaker wires?  Is it possible that the amp is not working when the engine is running? 

There are some amplifiers that will not work if they have too much voltage on the remote turn on wire.  Your other radio may have not had as much voltage going to the amp's remote terminal.  If the amp seems to not be working when the engine is running, using a volt meter, I need to know the voltage on the remote terminal, first with engine off and then with engine running.

Do You know where he is?





Posted By: KarTuneMan
Date Posted: July 02, 2009 at 1:27 PM

[QUOTE=i am an idiot]  If I help you fix your problem, will you tell us where he is?[/QUOTE]

I'm tryin my best to understand this..... with no luck.



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Posted By: KarTuneMan
Date Posted: July 02, 2009 at 1:31 PM

AHHH Ha.... google is MY friend too!

idiot, you are a twisted individual.....posted_image I like that!

Have a GREAT day........



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Posted By: i_want_the_boom
Date Posted: July 02, 2009 at 3:12 PM

Thats cold..... funny but cold...



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If the trunk dont rattle then its not loud.
If it's to loud then you're to old.




Posted By: i am an idiot
Date Posted: July 02, 2009 at 6:53 PM

I noticed his location.  The military can't find him, I figured I would ask.

Was not meant to be cold at all.  





Posted By: soundnsecurity
Date Posted: July 02, 2009 at 7:24 PM
road noise? maybe. are you driving when you notice less bass or are you just sitting still with the engine running

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Posted By: shahsalam1
Date Posted: July 03, 2009 at 4:25 AM
front speaker are connected directly with headunit. amplifier stays on while engine running .




Posted By: shahsalam1
Date Posted: July 03, 2009 at 4:32 AM
while not driving when i switch off engine, volume seems to be a little high and bass too.




Posted By: i am an idiot
Date Posted: July 03, 2009 at 6:07 AM
I know the amplifier's power light may remain lit, but can you verify that the speakers connected to the amp are still playing?

Remove the fuse from the amp so it will not play at all. Do the speakers connected to the radio also cut down when the engine is running?





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